Shortly after 10:30 a.m., Somerville Police responded to 60 Derby Street for a report of a breaking and entering in progress.

Police officers arrived on the scene within one minute of receiving the call, and observed two suspects fleeing the area. Officers pursued on foot.

After a brief struggle, the first suspect was quickly subdued and placed in custody. The second suspect was spotted by a responding detective in the area and pursued on foot to 15C Memorial Road.

Somerville Police, assisted by State Police and Medford Police, converged on the area and secured the perimeter. The NEMLEC SWAT Team was activated. The nearby Healey School – a K-8 facility – and two day care centers were placed in external lock down as a precaution, and city officials utilized Blackboard Connect mass notification systems to keep residents informed.

As police began an evacuation of 15 Memorial Road, officers spotted a suspect hiding in an apartment. He was placed under arrest without incident.

Two firearms which may be connected to this incident were recovered by police.

One officer was injured in apprehending the first suspect.

The suspects have been identified as Anthony Paulino, age 19, listed as homeless and Derrick Paul, age 22, with a still unconfirmed address.

Paulino is charged with Armed Home Invasion, Armed robbery, two counts of Receiving Stolen Property, (money and a firearm), carrying a firearm without a license, possession of ammunition without a license, and resisting arrest.

Derrick Paul is charged with Armed Home Invasion and Resisting Arrest.

Both will be arraigned in Somerville District Court on Tuesday morning.